This atlas
illustrates the plate tectonic development of the continents and ocean basins since the
Late Triassic. The maps show the location of past plate boundaries and the pattern
of sea floor spreading. This work is being done in collaboration with Antonio
Schettino (Milan, Italy). (example reconstruction).

A Database of Climate Sensitive Lithologies

A GIS database is
being constructed that contains over 7,000 localities of lithologic indicators
of climate. This data base is based on the compilation of Boucot &
Chen and is being assembled by myself & Sriroop Chaudhuri. For more
information see the Paleoclimate section of this
website.

New Cretaceous Paleogeographic maps

A new set of Cretaceous 3D
paleogeographic maps are being assembled. There will be 7 maps spanning
the entire Cretaceous. For an example of this work see the Late
Cretaceous 3D paleoglobe.

Revised Paleogeographic Atlas

A new set of paleogeographic maps is being prepared that will
illustrate the changing distribution of land, sea, and mountains during the last 750
million years. There will be one map for every 10 million years - going back to 100
million years, and one map for every 20 million years -going back to 750 million years.